baber/WOPTO huggingface dataset:
Patent GB-836377-A (GB)
Title: Improvements in extruding machines
Inventor: WALSH JOHN
IPC: B29C48/475
Filed: 1957-10-04
Abstract: 836,377. Extrusion machines. SMITH & CO. (WHITWORTH) Ltd., F. Nov. 24, 1958 [Oct. 4, 1957], No. 31098/57. Class 87(2). An extrusion machine has a chamber A with a number of extrusion apertures a and a division plate B which engages a ram C to close the lower portion of the chamber A from the upper portion, movement of the ram C causing the plate to withdraw from the chamber and the material to be extruded. Withdrawal of the ram C allows material to again enter the lower portion of the chamber. The movement of the material in the chamber may be assisted by a ram D, which may be power operated. The material may be discharged on to trays on an intermittently operated conveyer synchronised with the movement of the rams C, D.
Patent GB-1194637-A (GB)
Title: Improvements in or relating to Diesel Hammers Convertible to Gravity or Gravity Plus Air-Spring Action
Inventor: FREDERICK LEONARD LONG
IPC: B21J7/26
Filed: 1968-06-28
Abstract: 1, 194,637. Pressure gauges. KOEHRING CO. June 28, 1968, No.31130/68. Heading G1L. [Also in Division B3] A pressure gauge for use in a diesel hammer air compression chamber comprises a piston 19 whose rod 20 is calibrated and arranged to project from a cylinder 27 when the air pressure in a chamber 21 raises. An orifice restriction 25 prevents the rapid fluctuations in pressure in the chamber 21 and effecting the readingof the maximum pressure. The gauge has a rod 24 which extends into the compression chamber and the rod has a piston 22 which acts in a cylinder 23 in direct communication with the chamber 21.
Patent GB-160508-A (GB)
Title: Improvements in or relating to valveless pumps
IPC: F04B7/06
Filed: 1919-12-13
Abstract: 160,508. Boonzaier, W. G. Dec. 13, 1919. C r a n k actuated p u m p s ; indicating action of; sediment traps; delivery reservoirs; pumps w i t h reciprocating and oscillating piston moving in fixed cylinder.-In a valveless pump of the kind d comprising a reciprocating and oscillating piston 5 in a cylinder 1, the oscil- 1ations are rapidly effected at the end of the reciprocations. The piston is reciprocated by a crank 12 engaging a cross-head 8, in which the end of the piston - rod is revolubly mounted. Oscillation is effected by means of a cam on the crank-web oscillating a pair of levers 15 engaging a rack 19 in gear with a pinion 20 on a collar 30. A pin 21 on the collar engages a slot 22 in the piston-rod. In another form, the oscillation is effected by two arms projecting from the crank-webs and alternately engaging two vertical projections on the collar 30. In another form, the oscillating levers 15 reciprocate a slotted member engaging a crank-pin on the collar 30. The skirt of the piston has two ports 6, 6a about 90‹ apart with alternately register with the inlet and outlet ports 1<a>, 1<b>. In the doubleacting forms shown in Fig. 1, the ports 6, 6a in the upper skirt are diametrically opposite the corresponding ports in the lower skirt. The skirts are guided between the cylinder 1 and two cylindrical members 2 carried by the end covers. In the case of a deep-well pump, the cylinder 1 has a jacket through which the delivery liquid passes to the uptake pipe surrounding the pump rod. To enable the position of the cylinder to be ascertained for adjustment purposes, the cylinder carries abutments adapted to be engaged at the ends of the piston movements by an arm and a collar on the pump rod.
Patent GB-537024-A (GB)
Title: Improvements relating to internal combustion engines adapted to operate selectively with either oil or gaseous fuel
IPC: F02D19/10
Filed: 1939-12-04
Abstract: 537,024. Controlling alternative use of oil and gas. C.A.V. Ltd., and NICOLLS, W. E. W. Dec. 4, 1939, No. 31383. [Classes 7 (ii) and 7 (vi)] In an engine adapted to operate either with oil or gas, and wherein the throttle controlling the gas and air supply is connected to a spindle adjusting the oil-pump governor so that, when the throttle is closed, sufficient oil is supplied to keep the engine idling, while when the throttle is opened for operation on gas, only enough oil is injected to effect ignition by compression, as described in Specification 537,023, means are provided for withdrawing the stop h on the spindle d which governs the latter setting for working on gas, so that if the gas supply should fail, the engine may be operated on oil. The stop h may be withdrawn by a Bowden wire x connected to a valve on the gas-supply pipe, so that the valve is closed simultaneously with withdrawal of the stop h.
Patent GB-523150-A (GB)
Title: An improved reading stand for typists and other machine operators
IPC: B41J29/15
Filed: 1938-12-28
Abstract: 523,150. Copy-holders. MORRIS, J. H. Dec. 28, 1938, No. 31402. [Class 100 (iii)]  In a reading-stand for typists and other machine operators, a book-rest 3, Fig. 1, is carried by an upright arm 6, which is pivotally secured at its lower end to the back of the machine, and stops are provided to limit the pivotal movement, so that the book-rest can be moved from a position over the machine for use to a point beyond the back thereof. The device may be secured to the typewriter by clamping members 12, 13, which are drawn together by a bolt 17, and carry stops 27, which may be adjustable in position, for limiting the pivotal movement of the arm 6. The arm may be pivoted in a recess in a rod 24, Fig. 5, projecting from a plate 22, which is screwed to the typewriter, the walls of the recess serving as limiting-stops. The book-rest may be adjustably pivoted to bent arms which are curved towards the front of the machine, and are directly pivoted to the machine at their lower ends. Reference has been directed by the Comptroller to Specification 286,660, [Class 100 (iii)].
Patent GB-407452-A (GB)
Title: New or improved appliance or fitting for smokers' pipes
IPC: A24F5/08
Filed: 1933-09-12
Abstract: 407,452. Tobacco pipes. SHERIDAN, A. E., Hazelmere, Carnavon Road, Clacton-on- Sea. Sept. 12, 1933, No. 31499/32. [Class 130.] A bowl fitting for supporting the tobacco comprises a disc d, Fig. 1, of perforated or reticulated material clamped to a ring c suspended within the bowl by arms b having lugs f for engaging the rim of the bowl. The disc d may be secured by a ring of pliable sheet metal, with lugs k bent under the ring c. In a modification, Fig. 6, a perforated disc m of fireclay &c. is seated on a ring c<1> having lugs n bent over the edge of the disc. The arms b may be slit to form out-sprung tongues o, Fig. 5, to bear against the wall of the bowl, or may be formed with channels p, Fig. 8, and with a perforation or slit o<1> to admit cool air along the channels.
Patent GB-1000673-A (GB)
Title: Copolymer of formaldehyde and method for manufacturing the same
IPC: C08G2/00
Filed: 1963-08-09
Abstract: Formaldehyde is copolymerized with at least one cyclic anhydride chosen from cyclic anhydrides of (a) aliphatic polybasic carboxylic acids, (b) alicyclic polybasic carboxylic acids and (c) aromatic polybasic carboxylic acids. Specified anhydrides are succinic, methylsuccinic, dodecylsuccinic, maleic, itaconic, citraconic, glutaric, adipic, sebasic, cis-tetrahydrophthalic, hexahydrophthalic, phthalic, 3,6-dichlorophthalic, 4-5-dichlorophthalic, tetrachlorophthalic, pyromellitic and naphthalic anhydrides. A catalyst, e.g. organic amines, organic phosphines, their salts and their onium compounds may be present as may also chain transfer agents and lists are given of these. Inert organic solvents, e.g. hydrocarbons, ethers, ketones, methylene chloride and dimethyl formamide may be used. Stabilization of the product may be carried out by changing the end hydroxyl groups to acyl, alkyl, cyanoethyl or urethane groups. Specification 911,960 is referred to.
Patent GB-1191558-A (GB)
Title: Network for Detecting Resistance Changes.
IPC: H03K17/78
Filed: 1968-07-03
Abstract: 1,191,558. Switching circuit. CONTINENTAL INSTRUMENTS CORP. 3 July, 1968 [1 April, 1968], No. 31732/68. Heading H3T. [Also in Division G4] A control device such as a relay winding 12 is normally energized by current flow through series connected transistors 18, 20 which are held conductive by a third transistor 30 having an appropriately selected base bias 34, and the relay 12 is de-energized to operate for example an alarm or control function 13 upon non- conduction of either of the transistors 18, 20, caused by a change in resistance of a device 10, such as a photo-resistor, which change causes current to flow in a capacitor 38 and to upset the bias to transistor 30. The alarm 13 which may be audio or visual, or alternatively the control function 13 which may be the opening of a door, is responsive, for example, to someone walking in front of the photoresistor 10. The change in resistance may be positive or negative, and produces a corresponding positive or negative voltage change at 32, which in turn causes transistor 18 or transistor 20 respectively to cease conduction for the period required for the capacitor 38 to recharge. The transistor 30 then returns to its normal conduction state, the transistors 18, 20 being both again conductive. The circuit thus responds to changes in resistance 10, but not to absolute values thereof. In a modification (Fig. 2, not shown), a further amplifying transistor (48) is inserted, its base being connected to the capacitor (38), its emitter to the negative side of the battery (14), and its collector to a point on a potential divider connected across the battery. From a movable tapping (72) on the divider a voltage is taken to a further capacitor (70) which is connected to the base of the transistor (30).
Patent GB-462562-A (GB)
Title: Improvements in and relating to the manufacture of sports goods such as dartboards
IPC: F41J3/00
Filed: 1935-11-16
Abstract: 462,562. Dart-boards and like targets. WRIGHT, W. Nov. 16, 1935, No. 31737. [Class 132 (iii)] A method of constructing a dart-board or like target, consists in laying lengths of fibrous material, such as straw, hemp, bass, &c., on to a sheet or on to bands of material such as paper, rubber, woven fibrous material, &c., so as to support the lengths between adjacent convolutions of the rolled sheet or bands, and cutting the product transversely so that the ends of the lengths of fibrous material are presented on each of the playing surfaces of a target so produced. As shown in Fig. 1, the lengths 10 of straw &c. are fed on the sheet 11, as it is rolled, and are cemented by adhesive solution from nozzles 13. Doublesided targets are cut off along the planes 15. In modifications, the lengths 10 are secured to the sheet by means of interposed adhesive ribbons or by forming the sheet of heat-soluble material. The sheet may be replaced by a number of narrow bands. In a further modification, Fig. 5, the lengths 10 are wound in flexible steel bands 23 ... 26 which are removed for re-use, after slicing off the boards. Specifications 350,250 and 429,483 are referred to.
Patent GB-622292-A (GB)
Title: Improvements in or relating to electrical time control apparatus
IPC: H03K17/288
Filed: 1946-10-25
Abstract: 622,292. Control systems for consumption apparatus. HOLDEN, S. P., and SPEAK, A. E. Oct. 25, 1946, No. 31778. [Class 38 (iv)] Switching control.-The period of energization or de-energization of a circuit 20 is determined by the time taken to charge a condenser 16, through a resistance 10, to the striking potential of a gas-filled valve 5 which has the coil 13 of an electromagnetic relay in its anode circuit. In the de-energized position of the relay contacts connect the condenser 16 to the D.C. supply 7, 8, derived from a rectifier 1, and also to the valve anode through the relay coil, and connect the circuit 20 to the A.C. supply LN. Upon ignition of the valve, the relay (1) disconnects the condenser 16 from the D.C. supply and valve, and discharges it through a resistance 19; (2) disconnects the circuit 20 from the A.C. supply; (3) short-circuits the valve; and (4) connects the relay coil to the D.C. supply through a normally closed push switch 15 so as to maintain the relay core energized ready for the next period initiated by operation of the push switch. Instead of, or in addition to adjustment of the resistance 10, variation of the period may be effected by changing the condenser value. A fine adjustment is effected by cathode resistance 4. The relay contacts may be arranged so that the circuit is switched off, instead of being energized during the charging period.
Patent GB-1300405-A (GB)
Title: Improvements in nozzles for gas turbine jet propulsion engines
Inventor: MCMURTRY DAVID ROBERTS
IPC: F02K1/12
Filed: 1969-06-25
Abstract: 1300405 Jet propulsion nozzles - variable area DEFENCE SECRETARY OF STATE FOR 28 July 1970 [25 June 1969] 31989/69 Heading F1J The invention relates to a propulsion nozzle for a gas turbine jet engine comprising an annular array of flaps pivotally mounted at their upstream ends on a support member for radial movement of their downstream ends. The nozzle shown comprises a series of flaps 2 which are pivotally mounted at their upstream ends 4 on a ring member 5 which is axially movable by screw jacks 6. The adjacent flaps 2 are inter-connected by a series of circumferentially-extending links 30 which carry rollers 32 which engage in oppositelyinclined grooves 34 formed in adjacent flaps. A second ring member 14 is provided being connected to the first ring member 5 by a lost motion device so that the ring 14 moves a lesser distance than the ring 5 upon axial movement of the ring 5. The lost motion device comprises pairs of links 18 pivotally connected to the rings 5 and 14, and to a common roller 20, the rollers 20 engaging against a fixed cam member 24. The links 30 are connected to the ring 14 by means of links 12. Thus as the ring member 5 is moved axially, the ring member 14 is also moved axially but at a lesser rate and so relative movement occurs between the links 30 and the flaps 2 resulting in pivotal movement of the flaps about the points 4.
Patent GB-1355368-A (GB)
Title: Presensitised printing plates
IPC: G03F7/021
Filed: 1971-07-07
Abstract: 1355368 Photo-lithographic materials HOWSON-ALGRAPHY Ltd 7 July 1971 [19 Feb 1971] 31998/71 Addition to 1235281 Heading G2C A presensitized material for producing halftone printing plates by the deep etch process comprises a support coated with a layer of (1) a diazonium or azido compound or diazo resin and (2) a water-soluble polymer comprising (a) at least 60 by wt per cent of acrylamide (b) 10-20 by wt per cent of acrylonitrile or methacrylonitrile and (c) up to 20 by wt per cent of acrylic or methacrylic acid or salts thereof. The layer may contain a dye and be coated on a support treated as in Specification 1235281 and the material is exposed and developed as set out in Specification 1235281. The addition of component (c) to the polymer produces on exposure and development plates of increased hardness compared with the plates produced in Specification 1235281.
Patent GB-306615-A (GB)
Title: A process for obtaining a coloured coating similar to ceramic enamels
IPC: C04B28/08
Filed: 1927-11-28
Abstract: 306,615. Usines de la Basse-Meuse, Soc. Anon., and Ruppel, O. Nov. 28, 1927. Facing; hardening.-Slabs and tiles are glazed with a mixture of Portland and slag cements, an organic acid, and coluring mater. Suitable proportions are 1-3 parts Portland cement, 1 part slag cement, 10-15 per cent colouring matter, and 0.1-0.5 per cent of an organic acid of the formula CH2(CH2)x, COOH, where x has any value between 3 and 60. Water is added to make a paste which is applied to the surface by a spraying pistol, by casting, or other known method. Hardening is accelerated by exposure to a moist atmosphere containing an excess of carbon dioxide for 2-3 weeks. The hardening time may be shortened by immersing the tiles after two or three days in a bath consisting of 100 parts of water, 8-10 parts of sodium carbonate, and 1 or 2 parts of soluble silicate.
Patent GB-1390703-A (GB)
Title: Adapter stand for converting a binocular to a microscope
IPC: G02B21/00
Filed: 1973-07-05
Abstract: 1390703 Stand converting binoculars into a microscope BAUSCH & LOMB Inc 5 July 1973 [20 July 1972] 32016/73 Heading J A stand adapted to allow a pair of binoculars 15 to be used as a microscope comprises an upright frame 11 having a base portion 12 forming a specimen stage 20, a platform 43 movable with respect to the stage and adapted to support the binoculars with one of its objectives at 18 over a platform opening 55 containing an auxiliary lens 56 over the stage, the objective and auxiliary lens having a fixed spacing as the spacing between platform and stage is varied during focusing. The platform, having recesses engaging guide ribs 44, has a pendant rack 50 moved by pinion 40 and knob 39 and carries a lamp housing 60 for illuminating the stage and with a switch 68. The stage can be moved horizontally by rack and pinion 24 into frame port 13 to expose through a hole 26 in the base which may be placed over unmounted specimens for microscopic examination. The frame base has a socket 28 in which is resiliently held an adapter ring 29 enabling a camera to be connected to the binocular eye-piece 17 for photographing the specimen. The binoculars are inserted in a hollow portion 14 of the frame with their objective housing received in platform recesses 54.
Patent GB-1279992-A (GB)
Title: Grinding machine
Inventor: SCHNELLMANN OSCAR
IPC: B24B3/34
Filed: 1969-06-25
Abstract: 1279992 Grinding machines CARMET CO 25 June 1969 32072/69 Heading B3D A machine for grinding the edges of a flat workpiece comprises a machine frame 5, Fig. 2, mounting a vertical spindle 6, a motor-driven grinding wheel 8 mounted on the spindle 6 with its grinding face located horizontally in a trough 5<SP>1</SP>, and adjacent the edge of the trough a clamping device for clamping a workpiece so as to enable its edge to be machined by the grinding face, and means for imparting a rotating movement to the workpiece. The vertical position of the workpiece 21, Fig. 5, during its rotation is derived from a control cam rotating synchronously with the workpiece. The or each clamping device is carried by a casing 22 which is movable vertically on a guiding member 10 mounted on the machine frame. A lever 49 is pivotally connected with the casing 22 and at 48 with a linkage following the movement of the cam to move the casing vertically in response to rotation of the cam. A link 50 is pivoted on the guiding member 10 and is connected to the lever 49 at a point adjustable along the length of the lever to adjust the limits of vertical displacement of the casing, thus enabling workpieces of different sizes to be ground using the same control cam. As described, the machine includes a plurality of grinding units 9, 9<SP>1</SP>, 9<SP>11</SP>, Fig. 2, spaced about the wheel 8. A workpiece from a magazine 11, Fig. 5, on the unit 9 is fed by a piston-operated gripper to a position between a slidable spindle sleeve 23 and a working spindle 24, and is then clamped between the two spindles. The spindle 24 is driven from a motor 31, Fig. 4, via gearing 26, 27, an electromagnetic clutch 28, a spindle 29 and a friction disc 30. The spindle 29 carries the cam 25 which when rotated causes its follower linkage to move vertically and thus to pivot the lever 49, Fig. 5, thus causing the casing 22 and hence the workpiece to move vertically relative to the wheel 8. A spindle 52 is screw-threaded into a member pivoted to the lever 49, and is rotatable by a rack-and-pinion 55, 54 mounted on the casing 22 to raise or lower the latter and thus compensate for wear of the wheel 8. A piston-controlled feeler measures each workpiece after grinding and if the workpiece is oversize a piston 58 is operated to actuate the wear compensating device. To form a flat edge on the workpiece it may be moved radially of the wheel 8 by a piston-andcylinder device 35. The unit 9 may be tilted to give a bevelled edge to the workpiece.
Patent GB-1471480-A (GB)
Title: Contactless inductance interface pickup
IPC: G01N27/02
Filed: 1974-07-19
Abstract: 1471480 Welding by fusion INST ELEKTROSVARKI IM EO PATONA AKAD NAUK UKRAINSKOI SSR 19 July 1974 [23 July 1973] 32185/74 Heading B3R [Also in Division G1] An inductive interface pick-up for detecting the interface of two media, e.g. molten metalmetal, and molten slag-molten metal interfaces, e.g. in electroslag welding is cooled. The pickup comprising two oppositely wound primary windings 7 and a secondary winding 8 wound on a magnetic core 6 is mounted within a pot 3 having an end 5 of non-magnetic material, e.g. austenetic steel or a titanium alloy of thickness 0À05 to 0À35 mm. Pot 3 is rigidly secured in a non-magnetic outer housing 1 which is fitted into a hole in mould 14 so that its end forms part of the mould wall in which is interface 15. Clearance 2 between the two housings is divided into two parts by longitudinally extending members on housing 3, Fig. 2 (not shown), to define a path for coolant which flows into pipe 11 around housing 3 and out through pipe 12. In operation when interface 15 of slag 16 and liquid metal 17 in a remelting process is level with the bottom of housing 3 the output from the secondary winding is zero due to the cancellation of the primary fields in the centre limb of core 6. As the level rises the fields are affected differently by the eddy currents induced in the two liquids and an output is obtained from the secondary which may be used to alter the position of the mould 14 with respect to interface 15, i.e. to maintain the level opposite the control leg of the core. The ends of the housings 3, 5 may be convex or concave, Figs. 3, 4 (not shown), to correspond to the crosssection of the ingot being cast and the inclination of the core 6 may be adjustable, Figs. 5, 6, 7 (not shown), in order to ensure that the plane of the core is perpendicular to the interface and compensate for non-uniform thickness of the ends of the housings.
Patent GB-290522-A (GB)
Title: Improvements in and relating to scissors, shears, and the like
IPC: B26B13/28
Filed: 1927-11-30
Abstract: 290,522. Boyd, J. H. C. Nov. 30, 1927. Disc and like plate hinges; joint pins. - The pivot pin 9, Fig. 2, of shears, scissors and the like is screwed at 12 to engage with one of the blades 5, to which it is secured by a plate 14 formed with a non-circular hole that engages a similarly-shaped end 13 of the pivot. As shown in Fig. 3, the shaped end 23 of the pivots engages a disc 24 formed with a number of peripheral notches 27, with which is adapted to engage a pin 28 screwed into the blade 18 to lock the pivot pin in an adjusted position. Specification 290,307 is referred to.